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ObjectivesThe prevalence of bipolar II disorder (BD‐II) in Russia has never been studied. Therefore, we sought to identify patients meeting diagnostic criteria for BD‐II among patients with a current diagnosis of recurrent depressive disorder (RDD) through the use of the Russian versions of the Hypomania Checklist (HCL‐32) and Bipolarity Index scales for differentiating between BD‐II and RDD.
MethodsIn...